Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hieu quang » thieu quang, hieu quan, hieu qua
nhieu tang » chieu sang, hieu lang, nhiet nang
chinh sua » chinh su, chinh cua, chinh luan
sua nhung » cua nhung, qua nhung, chua nhung
chong dan » cong dan, thong dan, chong gian
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu quang) or (nhieu tang)) - hanh chinh sua nhung chong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (nhieu tang)) - hanh chinh sua nhung chong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quang) or (nhieu tang)) - hanh chinh sua nhung chong dan than cau*.